将者，智、信、仁、勇、严也。

摘要： Given a list of strings words representing an English Dictionary, find the longest word in words that can be built one character at a time by other wo 阅读全文

摘要： from:https://www.cnblogs.com/justinh/p/7716421.html Trie，又经常叫前缀树，字典树等等。它有很多变种，如后缀树，Radix Tree/Trie，PATRICIA tree，以及bitwise版本的crit-bit tree。当然很多名字的意义其实 阅读全文

摘要： features = sc.parallelize(data_group[idx]).map(lambda x: (x.host_ip+'^'+x.domain, 1)).reduceByKey(operator.add).map(get_domain_features) def get_domai 阅读全文

摘要： http://bdsmdvdtube.com/ 阅读全文

摘要： Write an algorithm to determine if a number is "happy". A happy number is a number defined by the following process: Starting with any positive intege 阅读全文

摘要： 解决方案 1、利用vi编辑器打开 /etc/bash.bashrc文件（需要root权限） sudo vi /etc/bash.bashrc 2、找到文件中的下列代码 #enable bash completion in interactive shells #if ! shopt -oq posi 阅读全文

摘要： Given a non-empty special binary tree consisting of nodes with the non-negative value, where each node in this tree has exactly two or zero sub-node. 阅读全文

摘要： 发现自己写python的空格split还挺多坎的，尤其是最后一个是空格的情形： 阅读全文

摘要： Given a string which consists of lowercase or uppercase letters, find the length of the longest palindromes that can be built with those letters. This 阅读全文

摘要： In a given integer array nums, there is always exactly one largest element. Find whether the largest element in the array is at least twice as much as 阅读全文